I'm afraid you made a BAD mistake. Boot Camp configurations rely on a hybrid MBR, in which a standard GPT configuration is extended in a standards-violating manner to include an MBR partition table that replicates some of the GPT partitions. This is useful because, when presented such a disk, OS X sees the GPT partitions but Windows sees the MBR partitions. As Windows will not boot from a GPT disk on a BIOS-based computer (which the Mac appears to be from Windows' perspective), this enables both OS X and Windows to boot from the computer.
The problem is that, if you use a Windows tool to repartition your disk, the MBR data structures are altered but the GPT data structures remain as they originally were. Depending on the details of what was done, this can result in loss of access to the Windows partitions from OS X, damage to some of the OS X partitions that can be difficult to undo, or other problems.
Your best approach is to back up all your data, wipe all the partitioning data from the disk, and then re-install and/or restore your data. Since you say you can boot to Windows, backing up your Windows data shouldn't be difficult. For OS X, you may need to use an OS X emergency disc to do the job. An OS X installation disc might suffice. It's also conceivable that you could use a Linux emergency disc to do the job, but it would be likely to omit some metadata from the backup.
I recommend you complain to Apple about this. It was their ill-conceived notion to use a hybrid MBR that made this type of blunder possible. In the long run, installing Windows in EFI mode (which uses a legal GPT setup) is a better solution. Unfortunately, this is very hard with Windows 7, although some people have succeeded in doing so. It's reportedly easier to install Windows 8 in EFI mode on most Macs, although some people seem to have problems even with that. You might want to consider using Windows 8 in EFI mode when you try again, and therefore bypass hybrid MBRs.
In the meantime, remember rule #1 when using hybrid MBRs:
- Never use an MBR-only tool for repartitioning. Use a GPT tool and, if necessary, re-create your hybrid MBR when you're done.